Home / 72,197.88-99,636.18-40,366.77

Finding the Fourth Proportional to 72,197.88, 99,636.18 and 40,366.77

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Solution

The fourth proportional to 72,197.88, 99,636.18 and 40,366.77 is: 55,707.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,197.88 : 99,636.18 = 40,366.77 : x
  2. Step 2: Convert to fraction form
    72,197.88/99,636.18 = 40,366.77/x
  3. Step 3: Cross multiply
    72,197.88x = 99,636.18 × 40,366.77
  4. Step 4: Simplify right side
    72,197.88x = 4,021,990,761.74
  5. Step 5: Solve for x
    x = 4,021,990,761.74/72,197.88
  6. Step 6: Final answer
    x = 55,707.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.